Ovtsyn A.A.

GAS PRODUCTS OF ARGON PLASMA INTERACTION WITH POLYARAMID AND POLY(ETHYLENE TEREPHTHALATE)

Non-equilibrium plasma is widely used for surface modification of polymer materials. Reac-tions of plasma active species with polymers lead not only to the surface modification, but to the for-mation of gaseous products, which change the plasma composition and internal plasma parameters. It results in the dependence of surface etching and modification kinetics on the quantity of material been treated (on sample sizes in a reactor). These phenomena are known as so called “loading effect” and have been studied for the treatment of polypropylene and polyimide films, poly(ethylene tereph-thalate) films and fabrics in oxygen and air plasma. It can be expected that gas products of noble gas plasma action on polymers will change strongly plasma parameters and modification results.

2016, Т. 59, № 7, Стр. 61-67

KINETIC REGULARITIES OF POLYCARBONATE ETCHING IN OXYGEN AND AIR PLASMA

Kinetics of etching of cast polycarbonate in the positive column of a DC glow dis-charge in a flow of oxygen and air were studied at the current range of 20-110 mA and pres-sure range of 50-300 Pa at different degrees of reactor loading with polymer. The mass loss rates, activation energies of etching process and surface energies were determined. The composition of surface functional groups was obtained by FTIR ATR method and surface morphology was characterized by AFM.

Key words: air plasma, oxygen plasma, plasma chemical etching, polycarbonate, modification

2016, Т. 59, № 2, Стр. 52-56
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